<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		li{
			list-style: none;
			width: 35px;
			height: 35px;
			margin-bottom: 5px;
			background: #7A6E6E url(./tool.png)  0 no-repeat;
		}
		.box1{
			background-position: -50px 0;
		}

		.box2{
			background-position: -50px -50px;
		}

		.box3{
			background-position: -188px -150px;
		}

		.box4{
			background-position: -50px -50px;
		}

	</style>
</head>
<body>
	<ul>
		<li class="box1"></li>
		<li class="box2"></li>
		<li class="box3"></li>
		<li class="box4"></li>
	</ul>
</body>
</html>